Henry westphal



Y in which- NITED STATES PATENT Fries.

HENRY 'WESTPHAL OF CHICAGO, ILLINOIS.

LOCK.'

SPECIFICATION forming part of Letters Patent No. 532,506, dated January 15, 1895,. i

Appuafiqn maMmnLisM. serai No. 501,924. (Nomade.)

To @ZZ whom t may concern/.1

Be it known that I,- HENRY WnsTrHAL, a citizen of the United States, residing at Ohicago, in the county of Oookvand State of Illinois, have invented certain newl and useful rImprovements in Locks, of which thefollowing is aspeciication. l

This invention relates to improvements in locks, which can be used for various purposes, and consists in certain peculiarities of the construction and novel varrangements of the various parts thereofv as will be hereinafter more fully set forth and specifically claimed.

In my application for Letters Patent for improvements in a combined hat and coat rack and receptacle forother articles, Serial No. 427,505, filed April 2, 1892, I have illustrated and fully described, but not claimed, thelock which is the subject matter of the present application, and have fully set forth its adaptability to such a device in the aforesaid application.

In order to enableothers skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to the accompanying drawings,

Figure 1, is a view in side elevation of my lock, with one of the plates of the casing lremoved, showing the key locked in. Fig. 2, is a similarv view showing the position of the parts of the look, when the key is removed. Fig. 3, is a plan sectional view, taken on line X, X, of Fig. 1. Fig. 4, is alike view, taken on line Y, Y, of Fig. 2.Y Fig. 5, is a perspective view, with one of the plates of the casing, the key-guide, stay land tumblers removed, and showing a portion of the operating rod in position to lift or operate the weighted cam or wheel of the lock,yand Fig. 6, isa plan view of a portion of the top of the casing showing the key-hole. Y

Similar letters refer to like parts throughout thedierent views of the drawings.

The lock consists of a casing, composed of two plates z', t', the plate z, being formed with a vertical slot Z, near its middle which extends through the bottom of the casing as shown, and having on its inner surface close to each of its ends the ribs m, m', both of which are formed with openings or recesses m2, 'm3, in which Athe sliding bolts M, M', operate, and

n', the former of which engages with the stay O,and the latterwith the sliding ribor bead N', on the piece N2, which uvnties the sliding bolts M,and M', and is preferably formed in vcrosssection, as shown in Figs. 8, and 4, with two projections N', and N4, at its edges, extending in opposite directions. The [lat piece N2, being provided near its lower portion, with a vertical slot N5, in which tits and operates a pin or lug 1o, on the bifurcated cam P, which cam is pivotally secured to the plate i, at a suitable point near the outer portionY of the slot 1, therein, as shown at Z'. VThis cam is made as clearly shown in Figs. l, 2, and 5, with two prongs fr, r', which form an open slot or'fork r2, into which will engage the lug or pin g', on the rod H.

As shown in Figs. 1, 2, and 3, the tumblers N, 'are pivotally secured as at o', on the rod o2, having its bearings in the top and bottom of the casing, near the farther end from the key-guide, and are provided with springs o3, which are interposed between the tumblers, and the plate t", and that they will be thus forced forward to engage with` the bead or rib N m, on the sliding piece N2.

Near the rib m, the casing is provided in its top and bottom, with suitable circular openings a, through which is passed a split tube, or key-guide S, which has its bearings for its lower end in the depending bracket S', on the bottom of the lock casing. The lower end of the key-guide S, is provided with a spring s2, which serves to revolve the key-guide, till the split therein, through which the projections t, on the key T, passes to engage with the tumblers, into alignment with the openings 0.3,

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2 seasoe The stay O, which is providedwith a number of recesses o5, to correspond with the number of projections t, on the key T, is rigidly secured in a vertical position, and longitudinally with the lock-casing, between the bead N', and the key-guide, and between the tuinblers and the piece N2. This stayis employed to regulate the combination of the lock, for it is obvious that the projections t, on the key, must correspond in number and dimensions with the recesses in the stay, otherwise they would not pass through the same.

It is evident that the operating rod Il', may be united or attached to any device that is desired to be locked, and that the projection g', on the rod H', will extend into the slot Z, of the plate c', of the lock, and will engage with the open slot r2, or fork between the prongs 0, and 7", on the cam P, when the upward movement of the operating bar H', provided as before stated with the projection g', engaging the prongs o, and r', will cause the cam P, to be raised to the position indicated in Fig. 2, the movement of which cam, by means of its pin p, operating in the slot N2,of the plate N2, will cause the sliding bolts M, M', and the bead N', which are connected to the plate N2, or made integral therewith to be retracted to the position shown in Fig. 2, which operation removes the plate N2, from interference with the projections on the shank of the key, and thus permits the key-guide S, to be partially revolved by means ofthe spring s2,tillthe projections of the key arein alignment with the opening a2, in the top ot'` the casing, when, and not before the key may be withdrawn, and the operating rod I-I', will be securely locked in said position by reason of the engagement of the tumbler N, with the bead N'.

In order to release or unlock the operating arm H', it will be necessary to replace the key in the key-guide, when by turning the same,

itsprojections will engage the tumblers and will free them from engagement with the bead N', when by reason of the weight of the rod H', and cam P, they will be lowered as shown in Fig. l, which operation will interpose the plate N2, between the projections on the key shank, and the opening a2, in the top of the casing, and prevent the key being removed.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. ln a lock, the combination of the casing, with a sliding plate, a recessed stay, and tumblers to engage the plate, akey-guide and a forked cam to engage with and to extend and retract the sliding plate, substantially as described.

` 2. In a1ock,tl1e combination of the casing, with the sliding plate N2, having the rib or bead N', the recessed stay O, and tnrnblers N, to engage the plate, the split-tube or key guide S, having the spring s2, and the forked cam P, having the weighted prong r', said cam engaging with and adapted to extend and retract the plate N2, in its upward and downward movements, substantially as described.

3. In alock, the combination of the casing, with the sliding plate N2, having the rib or bead N', and the guide-.way N3, for engagementwith the cam P, the recessed stay O, and recessed tnmblers N, to engage the plate, the split-tube or key-guide S, having the spring s2, and lug Sand the forked cap P, having the pin p, to engage the plate N2, by means of the guide-way N3, and adapted to extend and retract the plate in its upward and downward movements,substantially as described. 8:

` HENRY WESTPHAL. lVitnesses:

CHAs. C. TILLMAN,

E. A. DUGGAN. 

